Working voltage：220V±20％
Working environment：Temptature-45℃～+75℃，Relative humidity≤95％
Support DL/T645-1997、DL/T645-2007 communication protocol
Service life≥10 years
Able to forward orders sent to concentrator, and return meter’s data
With infrared maintenance interface, can query parameters and power data
Technical Parameters：
Data transmission port：Carrier communication interface, RS-485 meter-reading interface, infrared maintenance interface
Clock accuracy ≤ 0.5s/d
Clock battery life ≥ 10 years
Storage capacity：8KBEEPROM